Question about 1999 Chevrolet Lumina

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I have a OBD II Trouble Code PO401 - 1999 Chevrolet Lumina

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Exhaust gas recirculation flow insufficient. This has to do with the exhaust gas passing through the EGR valve. There could be a leak in the exhaust system, a defect in the EGR valve, a clog or restriction to the EBP sensor.

Posted on May 15, 2010

PO-401
EGR Flow Insufficient Detected

Posted on May 15, 2010

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redbeard00
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SOURCE: 2000 isuzu trooper: OBD-II Trouble Code: P0401 Insufficient EGR F

Your SUV is really giving you a hard time, lol. Sorry but I've had those days too.
I would try to check if you have blocked EGR passages. If ok check for restricted MAP sensor vacuum hose/passage or restricted exhaust. I know you replaced the CAT but if the muffler is blocked then there would still be a restriction. Also check the wiring and connection to the MAP sensor.

Posted on Apr 28, 2010

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Obd-ii error codes


OBD-II (Check Engine Light) Trouble Codes Welcome to OBD-Codes.com, your headquarters for everything OBD-II related. For more information on what OBD codes are, OBD-II codes explained, explanation of fuel trims, or answers to other questions, visit our FAQ area. The most common OBD-II codes are P0xxx powertrain codes, which are listed below on this page, along with P2xxx generic & P3xxx generic codes (please scroll down). For the other OBD-II codes, choose from Bxxxx - B Codes - OBD-II Body Codes or Cxxxx - C Codes - Chassis Codes, and Uxxxx - U - Network Codes. If your DTC (diagnostic trouble code) begins with P1xxx, that means it's a manufacturer specific code. For more information on P1 codes, choose your vehicle make here: Acura Audi BMW Chevrolet Dodge / Chrysler / Jeep Ford Honda Hyundai Infiniti Isuzu Jaguar Kia Land Rover Lexus Mazda Mitsubishi Nissan Subaru Toyota VW

Please use our new & improved search engine to find information on your trouble codes. Search Now! This list contains standard diagnostic trouble codes (DTC's) that are used by some manufacturers to identify vehicle problems. The codes provide below are generic codes that may not apply to all vehicles. Vehicle manufacturers may use manufacturer specific DTC codes that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes. We recommend that you not depend on the DTC codes in this list for vehicle repairs until you confirm the generic DTC codes apply to your vehicle(s). The list below is for information purposes only and is not intended for use in vehicle repairs.

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on Apr 14, 2015 | Cars & Trucks

1 Answer

2003 toyota highlander 3.0 code C1233. after stop sign make sound when accelerate


Toyota Highlander C1233 OBD-II Diagnostic Chassis (C) Trouble Code Description Toyota Highlander car C1233 OBD-II Trouble Code The ABS module receives wheel speed readings from each wheel speed sensor and processes this information to determine if an ABS event is necessary. The wheel speed sensor detects the magnetic field of Reason For Toyota Highlander C1233 Code The reason of Toyota Highlander C1233 OBD-II Engine Trouble Code is C1233 Left Front Wheel Speed Sensor Input Signal Missing.

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Whats ford windstar error codes p0715 mean


I hope this helps and is what your looking for... good luck

http://www.fordobdcode.com/p0715-ford

Ford P0715 OBD-II Trouble Code Definition:
P0715 Input Shaft Speed Sensor Circuit Malfunction
P0715 Ford OBD-II Trouble CodeDescription:
OBD Trouble Code P0715 Input/Turbine Speed Sensor "A" Circuit What does the code mean? OBD-ii Code P0715 definition:
The input speed sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM). Symptoms Sumptoms of OBD code P0715
- Engine Light ON (or Service Engine Soon Warning Light) - Possible shifting problems Causes Causes of the OBD-II code P0715
- Transmission speed sensor circuit is open or shorted. - Poor transmission speed sensor circuit connection - Faulty transmission speed sensor The Error code is generally activated on detection of the following conditions: Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not receive the proper signal from the sensor. Solutions

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1 Answer

Using my OBD II on 2000 honda prelude trouble codes PO401 & (PO401 pd) all reads MIL on, monitors, 1 INC, EVAP, 7 ready, MISFIRE, FUEL, COMP, CATLYST, 02 sensor, 02 HTR, EGR. Will be cleaning out EGR, BUT...


I would start with whatever is causing the misfire. That seems to be the core of your emissions codes. Putting all codes together it seems to be clogged injectors vacuum leak. Seems to be causing stalling too.

Jun 09, 2017 | Honda Prelude Cars & Trucks

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